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Siemens SIPLUS S7-1200 SM 1221 16DI Digital Input Module

Siemens SIPLUS S7-1200 SM 1221 16DI Digital Input Module, 24V DC.

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ManufacturerSiemens

Part number6AG1221-1BH32-4XB0

Channels 16 DI

Voltage 24 V DC

Configuration Sink/Source

Temperature Range -20 to +60 °C

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12-month warranty

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Veteran-owned

CAGE: 9NK75

16 Digital Inputs 24V DC Operation Sink/Source Capability Conformal Coating Extended Temperature Range (-20 to +60°C) SIPLUS Series

Product description

The Siemens SIPLUS S7-1200 SM 1221 (6AG1221-1BH32-4XB0) is a 16-channel digital input module designed for the S7-1200 PLC system. Based on the 6ES7221-1BH32-0XB0, this module features conformal coating for enhanced protection against corrosive environments and extreme temperatures (-20°C to +60°C). It supports sink and source configurations for 24 V DC signals.

This module is crucial for acquiring binary signals from field devices like pushbuttons, switches, and sensors in industrial automation. Its ruggedized design makes it suitable for harsh environments found in chemical plants, outdoor control panels, and other demanding applications.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 6AG1221-1BH32-4XB0, providing a cost-effective solution for expanding your S7-1200 system's input capabilities with reliable, tested components.

Technical specifications

Channels	16 DI
Voltage	24 V DC
Configuration	Sink/Source
Temperature Range	-20 to +60 °C
Base Module	6ES7221-1BH32-0XB0
Coating	Conformal Coating

Common applications

S7-1200 PLC Systems

Industrial Automation

Machine Control

Process Control

Building Automation

Hazardous Environments

Compatible systems

Siemens S7-1200 PLCs TIA Portal Industrial Ethernet

Also known as

SIPLUS SM 1221 16DI Siemens Digital Input Module 6AG1221-1BH32-4XB0

Replaces / compatible with

Direct replacement for standard Siemens SM 1221 16DI modules (6ES7221-1BH32-0XB0) in environments requiring conformal coating and extended temperature range.

Technical note

Expert tip

The conformal coating on this SIPLUS module provides essential protection against moisture, dust, and chemical contaminants, extending its lifespan in challenging industrial settings.

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Frequently asked questions

What is the operating temperature range for the Siemens 6AG1221-1BH32-4XB0?

The Siemens SIPLUS S7-1200 SM 1221 module (6AG1221-1BH32-4XB0) is designed for an operating temperature range of -20°C to +60°C, making it suitable for harsh industrial environments.